The Disk,valve, cataloged under National Stock Number 4820-01-127-6840, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is The Walworth Company. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-127-6840 |
| Primary Part Number | 9782-5-1 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | The Walworth Company |
| Status | ACTIVE |
| Taper Major Diameter | 3.560 INCHES NOMINAL IN |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 9782-5-1 PRIMARY | The Walworth Company (USA) |
| Reference | Meaning |
|---|---|
| 1889565 8 IN PIECE7 | 5/2 Secondary reference U.S. Government activity |
| 845-1889565 | D/9 Drawing number reference only U.S. Government activity |
| 2620-922X6 | D/9 Drawing number reference only U.S. Government activity |
| 2620-922X6 8 IN PIECE7 | 5/9 Secondary reference U.S. Government activity |
| 1889565 | D/9 Drawing number reference only U.S. Government activity |
NSN 4820-01-127-6840 is a Disk,valve, manufactured by The Walworth Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-127-6840 has 1 manufacturer part number on file: 9782-5-1 (The Walworth Company).
Key specifications for 9782-5-1: Taper Major Diameter: 3.560 INCHES NOMINAL IN; Material: STEEL. 2 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.